Effect of Calving Season, Calving Year and Lactation Number on the Milk Yield Traits in Holstein Cows Raising in Şanlıurfa

Mundan, Durhasan; Zonturlu, Abuzer Kafar; Öztürk, Yahya; Akkuş, Tuğra; Kaçar, Cihan

doi:10.24925/turjaf.v8i2.313-317.3011

Cited by 4 publications

(1 citation statement)

References 14 publications

(18 reference statements)

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“…Friesian cattle are the most reputed dairy cattle in Egypt. Holstein breed is preferred by breeders, because of their high milk production, good fattening ability, less difficulty in environmental adaptation and good breed selection can be achieved through proper recordkeeping (Mundan et al, 2020). In livestock population under computerized recording system, a large size of phenotypic observations is available at low cost, and it is worthwhile to use them in estimation of genetic parameters for economic traits.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Some Genetic and Non-Genetic Factors Influencing 305-DMY, TMY and Breeding values in Holstein Friesian Cows

Shalan

Manaa

El-Qaliouby

2022

Benha Veterinary Medical Journal

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Productive and reproductive records of 1509 Holstein Friesian were collected from private farm to study the influence of genetic (heritability (h 2 ), phenotypic correlation (r P), genetic correlation (r G), and estimated breeding value (EBV)) and environmental factors such as days in milk (DIM), dry period (DP), calving interval (CI), parity, season of calving, days open (DO) and age at first calving (AFC) on 305-day milk yield (305-DMY) and total milk yield (TMY). This study recorded highly significant (P ≤ 0.01) effect of all studied variables on TMY trait. DIM and DP had significant effect on 305-DMY. Nevertheless, the effect of parity and DO on 305-DMY were non-significant (P≥ 0.05). The average EBV for DP and CI were higher in dam than in cow, and sire. Also, for 305-DMY and DIM, they were higher in cow than in dam and, sire. For TMY, it was higher in sire than in cow and, dam. Medium heritability estimates for TMY, DIM, CI and DO were (0.32, 0.33, 0.29 and 0.29, respectively), while low heritability estimate (0.07) was recorded for DP. Finally, there were positive phenotypic correlation (r p) between all studied traits except 305-DMY had negative r p with DP and CI. Cattle breeders must consider the environmental factors in manage mental program because they greatly affect the farm profitability, and they must select individuals with higher breeding values to be the parents of the next generation.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Some Genetic and Non-Genetic Factors Influencing 305-DMY, TMY and Breeding values in Holstein Friesian Cows

Shalan

Manaa

El-Qaliouby

2022

Benha Veterinary Medical Journal

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Effect of Calving season and Parity on the Productivity and Profitability of Holstein Friesian Dairy Farms

Hamed

Atallah

2020

Benha Veterinary Medical Journal

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The aim of this study is to evaluate the effect of calving season and parity on the productivity and profitability of private and governmental dairy farms in Egypt. The data of this study were estimated from 1353 lactation records of Friesian dairy cows. The data were classified according to calving season into winter and summer calvers, and according to parity into six lactation orders from 1 st to 6 th , then the data were analyzed statistically by using the computer programs SPSS/PC+ version 23. Total milk yield (305MY) and net profit (NP) differed significantly between calving season and parity within production sector, private sector for winter calvers and 3 rd parity had the highest 305MY and NP (9759.5Kg-40960.9 EGP and 10304.3 kg, 44546.1 EGP, respectively), while governmental sector for summer calvers and 6 th parity had the lowest 305MY and NP (5028.4Kg-12117.1EGP and 4460.1kg, 10027.3 EGP, respectively). Total cost (TC) differed significantly within parity and sector, it was the highest for the private sector at 4 th parity (34849.1EGp), while 6 th parity for governmental sector had the lowest value (27657.5 EGP). Finally, we concluded that winter calvers and 3 rd parity achieve the highest profitability for dairy farms.

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Simental Irkı Sığırlarda Leptin ve Yağ Asidi Bağlayıcı Protein 4 Gen Polimorfizmleri ile Süt Verimleri Arasındaki İlişkinin Araştırılması

Üçme¹,

Akyüz²

2021

Erciyes Üniversitesi Veteriner Fakültesi Dergisi

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Bu çalışmada, Simental ırkı sığırlarda LEP-Sau3AI polimorfizm ve FABP4-Hin1I polimorfizmleri ile günlük ve 305 günlük süt verimi arasındaki ilişki araştırılmıştır. LEP-Sau3AI polimorfizminin belirlenmesi amacıyla yapılan polimeraz zincir reaksiyonu (PCR) sonunda 422 bp uzunluğunda bir PCR ürünü elde edilmiştir. FABP4-Hin1I polimorfizminin belirlenmesi için yapılan PCR işlemi sonunda ise 399 bp uzunluğunda bir PCR ürünü elde edilmiştir. Elde edilen LEP-Sau3AI ve FABP4-Hin1I genotipleri ile günlük ve laktasyon süt verimleri arasındaki farklılığın önem kontrolü tek yönlü varyans analizi ile değerlendirilmiştir. İncelenen örneklerin LEP-Sau3AI polimorfizmi yönünden Hardy-Weinberg (H-W) dengesinde olmadıkları gözlenmiştir.LEP-Sau3AI polimorfizmi yönünden incelenen Simental ırkı sığırlarda AA'nın en yaygın (n=137) genotip olduğu, BB genotipinin ise görülmediği belirlenmiştir. FABP4-Hin1I polimorfizmi yönünden incelenen Simental ırkı sığırlarda GG genotipinin en sık görülen genotip (n=164) olduğu gözlenmişken, AA genotipin ise incelenen örneklerde en az görülen genotip olduğu (n=1) belirlenmiştir. FABP4-Hin1I polimorfizmi yönünden de incelenen Simental ırkı sığırların H-W dengesinde oldukları gözlenmiştir. Çalışma sonunda incelenen Simental ırkı sağmal ineklerde LEP-Sau3AI ve FABP4-Hin1I polimorfizmi ile günlük ve 305 günlük süt verimleri arasında ilişki olmadığı belirlenmiştir. Çalışma sonunda bu iki gen yönünden daha çok örneğin incelendiği çalışmaların planlanması gerektiği düşünülmüştür.

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Effect of Calving Season, Calving Year and Lactation Number on the Milk Yield Traits in Holstein Cows Raising in Şanlıurfa

Cited by 4 publications

References 14 publications

Evaluation of Some Genetic and Non-Genetic Factors Influencing 305-DMY, TMY and Breeding values in Holstein Friesian Cows

Evaluation of Some Genetic and Non-Genetic Factors Influencing 305-DMY, TMY and Breeding values in Holstein Friesian Cows

Effect of Calving season and Parity on the Productivity and Profitability of Holstein Friesian Dairy Farms

Simental Irkı Sığırlarda Leptin ve Yağ Asidi Bağlayıcı Protein 4 Gen Polimorfizmleri ile Süt Verimleri Arasındaki İlişkinin Araştırılması

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