EFFECT OF DIETARY SUPPLEMENTATIOM OF ZINC, COPPER AND SELENIM PRE- OR POST-PARTUM ON REPRODUCTIVE PREFORMANCE OF FRIESIAN COWS
M.
Abu El-Hamd
Animal Production Res. Inst., Agric. Research Center, Dokki, Egypt.
author
M.
Sayah
Animal Production Res. Inst., Agric. Research Center, Dokki, Egypt.
author
M.
Tag El-Dein
Animal Production Res. Inst., Agric. Research Center, Dokki, Egypt.
author
A.
Salama
Animal Production Res. Inst., Agric. Research Center, Dokki, Egypt.
author
S.
Ibrahim
Animal Production Res. Inst., Agric. Research Center, Dokki, Egypt.
author
text
article
2011
eng
The objective of this study was to evaluate the effect of adding zinc (Zn), copper (Cu) and selenium (Se) to the ration on ovarian activity andreproduction performance of Friesian cows. A total of 39 Friesian cows between the 1st and 3rd parity and average 532.7±23.5 kg LBW was divided into three similar groups (n=13 each). Multiparous cows (n=10 in each group) were divided according to their LBW, parity and milk production of the previous season, while primiparous cows (n=3 in each group) were allotted on their LBW. Cows of the 1st group (G1) were fed concentrate feed mixture (CFM), rice straw and corn silage (control). Cows of the 2nd group (G2) were received 60 mg Zn, 20 mg Cu and 0.3 mg Se /kg CFM on day 30 prepartum to calving, while those of the 3rd group (G3) were received the same diet of (G2) from calving to 60 days postpartum. Throughout the experimental period, oestrus was detected and cows in heat were inseminated. Also, number and length of ovulatery cycles from calving up to conception were recorded. Post-partum 1st estrus and 1st service intervals, number of services per conception (NSC), days open (DO) and conception rate were assessed. Pregnancy was diagnosed by rectal palpation on day 60 post-insemination.
Results revealed that Pre- and postpartum supplementationof Zn, Cu and Se (G2 and G3) increased (P<0.05) body weight gain and body condition score as compared to G1. Interval from calving to 1st oestrus was significantly (P<0.01) shorter in G2 and G3 (23.5 and 27.45 days, respectively) than the G1 (39 days). Post-partum 1st service interval was significantly (P<0.05) shorter in G2 and G3 (42.5 and 44.15 days) than that in G1 (59.1 days). Supplementation of Zn, Cu and Sein G2 and G3 significantly (P<0.05) reduced NS/C to 1.7 and 1.8 services and DO to 77.6 and 79.8 days as compared to 3.6 services and DO of 128.0 days in the control group, respectively. The Zn, Cu and Setreatment increased conception rate (CR), being significantly (P<0.05) the highest in G3 (84.15%), modest in G2 (76.92%) and the lowest in G1 (53.85%). Supplementation of Zn, Cu and Se in G2 and G3 significantly (P<0.05) decreased average number of total ovulations and ovulatory cycles per cow compared with the control group. Average P4 concentration during the ovulatory cycles and P4 level prior to estrus incidence were significantly (P<0.05) increased in G2 and G3 as compared to G1. Ovulatory cycle length and interval to P4 peak during the ovulatory cycles were not affected by dietary supplementation.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
2
v.
8
no.
2011
291
301
https://jappmu.journals.ekb.eg/article_83382_293e34d8a6e0ad60ce4c433296404751.pdf
dx.doi.org/10.21608/jappmu.2011.83382
EFFECT OF SEMINAL PH VALUE AT INSEMINATION ON SEX RATIO OF BOVINE EMBRYOS
Sh.
Shamiah
Animal Production Research Institute, Dokki, Giza, Egypt
author
A.
Hussein
Animal Production Research Institute, Dokki, Giza, Egypt
author
M.
Tag El-Dein
Animal Production Research Institute, Dokki, Giza, Egypt
author
S.
Sweify
Animal Production Research Institute, Dokki, Giza, Egypt
author
A.
El-Beltagy
Animal Production Research Institute, Dokki, Giza, Egypt
author
text
article
2011
eng
The objective of this study was to evaluate the effect of changes in seminal pH value at insemination on sex ratio of bovine embryos and confirm embryo sexing using Polymerase Chain Reaction (PCR). Eighteen Friesian cows superovulated with 2500 IU of PMSG and divided into three groups were used in this study. Cows in the first (G1), second (G2) and third (G3) group were artificially inseminated by diluted semen with pH values of 6.9 (control), 5.4 (acidic) and 8.4 (alkaline), respectively. Results showed insignificant (P≥0.05) effect of seminal pH value on ovulatory response and quality of recovered embryos. Change of seminal pH value to acidosis in (G2) produced higher (P<0.01) number of females (19/32, 59.4%) than males (13/32, 40.6%). Change of seminal pH value to alkaline (G3) produced higher (P<0.01) number of males (61.8%) than females (38.2%). However, sex ratio of cows inseminated with control semen (pH=6.9, G1) was 51.9% males: 48.2% females.
In conclusion, change of seminal pH value to alkaline tended to produce more males, while acidic semen tended to produce more females. Based on these results motility of spermatozoa bearing Y-chromosome may be affected by the acidic condition of the semen, while X-chromosome had an opposite trend.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
2
v.
8
no.
2011
303
310
https://jappmu.journals.ekb.eg/article_83384_63d579d05e315c8a0e00a1672f5ac0a4.pdf
dx.doi.org/10.21608/jappmu.2011.83384
FREEZABILITY, DNA INTEGRITY AND FERTILIZING CAPACITY OF SPERMATOZOA OF FRIESIAN BULLS TREATED WITH ANTI - HELMINTHIC DRUGS
M.
Tag El-Dein
Animal Production Research Institute, Dokki, Giza, Egypt.
author
A.
Zeidan
Animal Production Research Institute, Dokki, Giza, Egypt.
author
Nabila
El-Desouki
Department of Zoology, Faculty of Science, Tanta University, Egypt.
author
Ghada
Tabl
Department of Zoology, Faculty of Science, Tanta University, Egypt.
author
Rabab
Kamel
Department of Zoology, Faculty of Science, Tanta University, Egypt.
author
text
article
2011
eng
Effect of three different anti-helminthic drugs (ivermectin, levamisole and albendazole) on quality and fertility of spermatozoa of frozen-thawed semen of Frisian bulls .Animals were divided into four groups, control untreated group, and bulls treated with 200 µg/kg of ivermectin (IVM), 7.5 mg/kg of levamisole (LEV), and 10 mg/kg of albendazole (ABZ), respectively. The drugs used at two doses with 8-week interval between first and second dose. Semen was collected for 8th weeks after each dose, extended, and frozen for two months, then post-thawing motility, freezability, intact acrosome and DNA integrity were determined. After the second dose, bulls treated with IVM and LEV significantly (P<0.05) increased post-thawing motility, freezability and intact acrosome. Bulls treated with IVM did not negatively influenced DNA integrity, while LEV treatment affected negatively on DNA integrity by increasing tail moment percentage. Either first or second doses of ABZ did not negatively affect post-thawing motility, freezability, intact acrosome and DNA integrity. Fertility rates of the cows artificially inseminated with the frozen-thawed semen were significantly (P<0.05) higher when they were inseminated with semen of bulls treated with IVM or LEV and untreated bulls (control) than those treated with ABZ. In conclusion, treatment of Friesian bulls with Ivermectin as anti-helminthic drug at a level of 200 µg/kg live body weight improved post-thawing motility and freezability of spermatozoa, percentage of spermatozoa with intact acrosome, and maintained DNA integrity and subsequent fertilizing efficiency of bull spermatozoa as compared to control bulls or bulls treated with Levamisole (7.5 mg/kg) or Albendazole (10 mg/kg) either after the first or second dose.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
2
v.
8
no.
2011
311
326
https://jappmu.journals.ekb.eg/article_83387_d3aac54971ff9946e55c9b39b7d42cc7.pdf
dx.doi.org/10.21608/jappmu.2011.83387
DIETARY Nigella sativa AND YEAST CELL WALL FOR REDUCING THE TOXICITY OF OCHRATOXIN A IN CULTURED NILE TILAPIA IN EGYPT.
Amel
Abo Hagger
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
Kh.
El-Melegy
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
Zeinab
Abdel- Ghany
Regional Center for Foods and Feeds, Agric. Res. Center, Ministry of Agric., Giza, Egypt.
author
R.
Abou-Seif
Aquaculture Research lab. Abbassa, Abo-Hamad, Egypt.
author
text
article
2011
eng
This study was conducted to investigate the toxic effects of Ochratoxin A (OTA) on mono-sex Nile tilapia Oreochromis niloticus in a feeding trial for 8 weeks and attempting to detoxify these drastic effects by using some dietary supplements. One percent of each of these supplements (yeast cell wall, and /orNigella sativa) was added to 5mg OTA diet for fingerlings. The OTA contaminated diets significantly (P˂0.05) decreased growth performance (live body weight, body weight gain and relative growth rate) and some tested blood parameters (total protein, albumin, globulin), but uric acid, creatinine and mortality rate were significantly increased by OTA. Either evaluated supplements significantly improved growth performance, blood parameters and mortality rate which negatively affected by OTA. The best results obtained with yeast cell wall plus Nigella sativa followed by Nigella sativa and yeast cell wall, respectively. The economic efficiency followed the same trend. It may be concluded that the tested supplements have the ability to alleviate the toxicity of OTA and improve the economic efficiency of fish.
Journal of Animal and Poultry Production
Mansoura University, Faculty of Agriculture
2090-3642
2
v.
8
no.
2011
327
336
https://jappmu.journals.ekb.eg/article_83389_7bd3294287cc412f263a5429d2f3fae0.pdf
dx.doi.org/10.21608/jappmu.2011.83389