Relationship of udder morphometry with milk yield and body condition traits in Beetal goats

JENA, SOUMYASHREE; Malik, D.S.; Kaswan, Sandeep; Sharma, Amit; Kashyap, Neeraj; Singh, Udeybir

doi:10.56093/ijans.v89i2.87342

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…This developmental process is mainly regulated by hormones, growth factors, and cytokines. Jena et al [37] recorded the morphological characteristics of the udder (length, column width, row width, depth, circumference, volume) and teat (length, diameter, circumference, height from the ground, inter-teat distance) of goats alongside daily milk yield over three months. Correlation analysis showed that all the teat traits were positively correlated with daily milk yield.…”

Section: Udder Traitsmentioning

confidence: 99%

Genome-Wide Association Study of the Reproductive Traits of the Dazu Black Goat (Capra hircus) Using Whole-Genome Resequencing

Fang,

Gu,

Chen

et al. 2023

Genes

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Reproductive traits are the basic economic traits of goats and important indicators in goat breeding. In this study, Dazu black goats (DBGs; n = 150), an important Chinese local goat breed with excellent reproductive performance, were used to screen for important variation loci and genes of reproductive traits. Through genome-wide association studies (GWAS), 18 SNPs were found to be associated with kidding traits (average litter size, average litter size in the first three parity, and average litter size in the first six parity), and 10 SNPs were associated with udder traits (udder depth, teat diameter, teat length, and supernumerary teat). After gene annotation of the associated SNPs and in combination with relevant references, the candidate genes, namely ATP1A1, LRRC4C, SPCS2, XRRA1, CELF4, NTM, TMEM45B, ATE1, and FGFR2, were associated with udder traits, while the ENSCHIG00000017110, SLC9A8, GLRB, GRIA2, GASK1B, and ENSCHIG00000026285 genes were associated with litter size. These SNPs and candidate genes can provide useful biological information for improvement of the reproductive traits of goats.

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Section: Udder Traitsmentioning

confidence: 99%

Genome-Wide Association Study of the Reproductive Traits of the Dazu Black Goat (Capra hircus) Using Whole-Genome Resequencing

Fang,

Gu,

Chen

et al. 2023

Genes

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“…The phenotypic relationship between zoometrics and dairy production (either milk yield, components, or even transformed products, such as cheese) has been investigated (17)(18)(19) and tools seeking the optimal dairy goat type have been developed (13,15,16,20,21). As a result, some methods have been developed for predicting daily milk production and the performance of milk components from morphometry and linear appraisal (22,23).…”

Section: Introductionmentioning

confidence: 99%

Discriminant canonical tool for inferring the effect of αS1, αS2, β, and κ casein haplotypes and haplogroups on zoometric/linear appraisal breeding values in Murciano-Granadina goats

Álvarez¹,

González

Jurado³

et al. 2023

Front. Vet. Sci.

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Genomic tools have shown promising results in maximizing breeding outcomes, but their impact has not yet been explored. This study aimed to outline the effect of the individual haplotypes of each component of the casein complex (αS1, β, αS2, and κ-casein) on zoometric/linear appraisal breeding values. A discriminant canonical analysis was performed to study the relationship between the predicted breeding value for 17 zoometric/linear appraisal traits and the aforementioned casein gene haplotypic sequences. The analysis considered a total of 41,323 zoometric/linear appraisal records from 22,727 primiparous does, 17,111 multiparous does, and 1,485 bucks registered in the Murciano-Grandina goat breed herdbook. Results suggest that, although a lack of significant differences (p > 0.05) was reported across the predictive breeding values of zoometric/linear appraisal traits for αS1, αS2, and κ casein, significant differences were found for β casein (p < 0.05). The presence of β casein haplotypic sequences GAGACCCC, GGAACCCC, GGAACCTC, GGAATCTC, GGGACCCC, GGGATCTC, and GGGGCCCC, linked to differential combinations of increased quantities of higher quality milk in terms of its composition, may also be connected to increased zoometric/linear appraisal predicted breeding values. Selection must be performed carefully, given the fact that the consideration of apparently desirable animals that present the haplotypic sequence GGGATCCC in the β casein gene, due to their positive predicted breeding values for certain zoometric/linear appraisal traits such as rear insertion height, bone quality, anterior insertion, udder depth, rear legs side view, and rear legs rear view, may lead to an indirect selection against the other zoometric/linear appraisal traits and in turn lead to an inefficient selection toward an optimal dairy morphological type in Murciano-Granadina goats. Contrastingly, the consideration of animals presenting the GGAACCCC haplotypic sequence involves also considering animals that increase the genetic potential for all zoometric/linear appraisal traits, thus making them recommendable as breeding animals. The relevance of this study relies on the fact that the information derived from these analyses will enhance the selection of breeding individuals, in which a desirable dairy type is indirectly sought, through the haplotypic sequences in the β casein locus, which is not currently routinely considered in the Murciano-Granadina goat breeding program.

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Saanen Keçilerinde Sütçülük Özellikleri, Meme Morfolojisi ve Meme Ölçülerinin Belirlenmesi Üzerine Bir Çalışma: Ege Üniversitesi Ziraat Fakültesi Zootekni Bölümü Keçi Sürüsü Örneği

AHMED

Taşkın

2022

Hayvansal Üretim

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Amaç: Saanen keçilerinde sütçülük özellikleri, meme morfolojisi ve meme ölçüleri ile bunlar arasındaki fenotipik korelasyonları belirlenmektir.Materyal ve Metot: Çalışmanın hayvan materyalini Ege Üniversitesi Ziraat Fakültesi Zootekni Bölümü Küçükbaş Hayvancılık Biriminde yetiştirilen 3-5 yaş arasındaki toplam 38 baş Saanen keçi oluşturmuştur. Keçilerde ADGA (American Dairy Goat Association) tarafından geliştirilen bir puan kartı uygulanarak bireysel tanımlama yapılmıştır. Meme morfoljik özellikleri olarak; memenin simetri durumu (Simetrik, Orta düzeyde simetri, Asimetrik), meme loblarının ayrık olma durumu (Loblu, Armut şeklinde, Sarkık), memenin vücuda bağlanma şekli (Bağlı, Orta düzeyde bağlı, Çok sarkık), iki meme başı arasındaki açı (80-1200; 121-1600; 1610<) ve meme başı şekli (Huni, Şişe, Balon) gibi özellikler bireysel olarak belirlenmiştir. Meme ölçülerinin belirlenmesi, laktasyonun başından kuruya çıkıncaya kadar devam edilmiştir. Keçilerden alınan meme ölçüleri laktasyonun başında ve sonunda olmak üzere bireysel olarak her ay ayda 2 kez yapılıp bunların ortalaması alınarak yapılmıştır.Bulgular: Saanen keçilerinde sütçülük özellikleri ve meme sistemine ait ortalama puan sırasıyla; 11 ve 25 dir. Keçilerde loblu, armut ve sarkık tip meme şekline sahip olanların oranı sırasıyla; %45, %30 ve %25 olarak belirlenmiştir. Saanen keçilerinde laktasyonun başı ve sonunda meme genişliği ve çevresine ait ortalamalar sırasıyla; 17.69 cm ve 13.85 cm; 48.33 cm ve 42.53 cm olarak belirlenmiştir. Sarnıç derinliği ise 2.90 cm olarak ölçülmüş olup, bu değer laktasyon sonunda azalarak 1.72 cm kadar gerilemiştir. Saanen keçilerinde laktasyon dönemlerine göre incelenen meme özellikleri arasındaki ayrım istatistiki olarak önemli bulunmuştur (p<0.05). Keçilerde meme çevresinin, meme başı uzunluğu ve meme derinliği ile olan ilişkisi de önemli bulunmuştur (p<0.01). Laktasyon süt veriminin günlük ortalama süt verimiyle olan ilişkisinin yanı sıra meme derinliği ve meme çevresiyle olan ilişkisi de önemli bulunmuştur (p<0.05).Sonuç: Keçilerde sütçülük ve bazı önemli meme özelliklerinin ıslah programlarında modele konulması ya da bir dolaylı seleksiyon ölçütü olarak alınması yararlı olacaktır. İşletmedeki olanaklar ölçüsünde meme özellikleri somatik hücre sayısı, mastitise dirençli soyların genetik markerlar aracılığıyla belirlenmesi günümüzdeki modern keçicilik işletmelerinde ele alınması, gereken diğer temel özellikler olmalıdır. Bu durum, işletmenin amacı ve ekonomik olanaklarına bağlı olarak da değişim gösterebilir.

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Relationship of udder morphometry with milk yield and body condition traits in Beetal goats

Cited by 4 publications

References 11 publications

Genome-Wide Association Study of the Reproductive Traits of the Dazu Black Goat (Capra hircus) Using Whole-Genome Resequencing

Genome-Wide Association Study of the Reproductive Traits of the Dazu Black Goat (Capra hircus) Using Whole-Genome Resequencing

Discriminant canonical tool for inferring the effect of αS1, αS2, β, and κ casein haplotypes and haplogroups on zoometric/linear appraisal breeding values in Murciano-Granadina goats

Saanen Keçilerinde Sütçülük Özellikleri, Meme Morfolojisi ve Meme Ölçülerinin Belirlenmesi Üzerine Bir Çalışma: Ege Üniversitesi Ziraat Fakültesi Zootekni Bölümü Keçi Sürüsü Örneği

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