<p>The outer performance can be used for livestock selection. Body size and udder can be used to assess livestock productivity. This study aimed to determine the correlation between body size (body length, shoulder height and chest size), udder volume and milk production. The material used were 35 lactation PE goats in the lactation period of II-III and lactation month of 4-5. The analysis used was simple linear correlation regression and non-linear quadratic. The results showed that milk production and udder volume did not increase during the increasing of body length. Shoulder height with udder volume and milk production have unreal correlation. The overall calculation shows that there is no relationship between chest size, udder volume and milk production in livestock. The udder volume with milk production shows a strong correlation. In conclusion, there is no relationship between body length, shoulder height and chest size with udder volume and milk production. The correlation between udder volume and milk production is more udder volume, more milk can be produced.</p>

Mastitis is the biggest economic problem in dairy industry. Mastitis also causes animal welfare problem and it is a thread to food safety and security. A baseline survey involving small-holder dairy farms was conducted to identify the correlation between mastitis (mammary inflammation) and cow’s productivity. The performance of cows, in terms of milk production, milk composition, as well as mammary inflammation levels were observed. The research was conducted in Central Java, Indonesia. A total of 103 lactating cows in the 2nd to 3rd month of lactation and parity were used. California Mastitis Test was used to analyse the inflammation level of mammary gland. Milk protein, fat and lactose contents were determined with Lactoscan Milk Analyzer. Milk production was recorded daily at morning and evening milking. The result shows statistically negative correlation (P<0.0001) between the level of mammary inflammation and milk production (r = -0.59) as well as milk protein (r = -0.55), lactose (r = -0.51), and fat contents (r = -0.46). It is concluded that, when the mammary infection in cows increased, milk production and milk components will be decreased.

The objective of this research was to determine the correlation of udder volume and nipple size with milk production of Holstein Friesian dairy cows at PT. Naksatra Kejora, Temanggung Regency, Central of Java. The research was conducted on October 1 to November 30, 2018 that used 35 lactation Holstein Friesian cattle with lactation period 1-5 and lactation months 1-10. The research method was carried out by observational method. The parameters measured were udder volume, nipple volume, nipple circumference, nipple length and milk production. Data were analyzed using correlation analysis, multiple and simple linier regressions, where the volume of udder and nipple size as independent variables (X) and milk production as dependent variable (Y). The results showed that there was a significant correlation between udder volume and milk production and there was no correlation between nipple volume, nipple length and nipple circumference with milk production. It can be concluced that udder volume was the most appropriate variable to predict milk production with equation of Y =3.375 + 0.166X (R 2 = 0.704) in morning milking.

Tujuan penelitian untuk mengevaluasi kelahiran pedet sapi perah dengan indikator jumlah kelahiran jantan dan betina, lama kebuntingan dan bobot lahir sapi yang dipelihara oleh Balai Besar Pembibitan Ternak Unggul Hijauan Pakan Ternak (BBPTU HPT) Baturraden, Purwokerto. Penelitian dilaksanakan bulan April 2015. Materi penelitian adalah data rekording kelahiran sapi perah mulai dari tahun 2010 hingga April 2015. Data rekording memuat informasi nomor identitas pedet, tanggal IB (Inseminasi Buatan), tanggal kelahiran, bobot lahir dan jenis kelamin pedet. Parameter yang diamati adalah jumlah kelahiran dan kegagalan lahir, bobot lahir dan jenis kelamin. Sedangkan lama kebuntingan dihitung mulai dari tanggal IB terakhir sampai tanggal lahir pedet. Analisis data kelahiran pedet dilakukan dengan deskriptif. Data bobot lahir dan lama kebuntingan dilakukan uji normalitas Shapiro-Wilk menggunakan software SPSS 16.0 kemudian dilanjutkan dengan uji T-Test. Hasil penelitian menunjukkan bahwa jumlah kelahiran dari tahun 2010 sampai April 2015 sebanyak 822 ekor, yang terdiri dari pedet jantan sebanyak 424 ekor (51,58 %) dan betina 398 ekor (48,42 %). Peristiwa kegagalan lahir sebanyak 112 ekor karena abortus, freemartin, distokia dan stillbirth. Bobot lahir pedet jantan dan betina relatif sama (P>0,05) yaitu rata-rata 43,34 kg (jantan) dan 40,39 kg (betina). Lama kebuntingan relatif sama (P>0,05), rata-rata lama kebuntingan yaitu 277 hari (jantan) dan 278 hari (betina). Kesimpulannya adalah; kelahiran pedet betina perlu ditingkatkan melalui penurunan angka kematian atau kegagalan lahir.

Penelitian ini bertujuan untuk mengkaji pengaruh suplementasi baking soda dalam pakan terhadap urea darah dan urea susu pada sapi perah laktasi. Materi yang digunakan pada penelitian ini adalah 12 ekor sapi perah laktasi Friesian Holstein (FH). Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap dengan 3 perlakuan 4 ulangan yaitu T0 (pakan tanpa suplementasi baking soda), T1 (pakan dengan suplementasi baking soda 0,8 % BK pakan), T2 (pakan dengan suplementasi baking soda 1 % bahan kering pakan). Parameter yang diukur meliputi konsumsi protein kasar, urea darah dan urea susu. Data yang diperoleh dianalisis ragam (uji F) pada taraf 5%. Hasil penelitian menunjukan bahwa suplementasi baking soda tidak menunjukan pengaruh nyata (P>0,05) tehadap konsumsi PK, urea darah dan urea susu. Rata-rata konsumsi PK perlakuan T0, T1 dan T2 adalah 2.097,43; 2.079,19 dan 2.053,17 g/hari, rata-rata kadar urea darah T0, T1 dan T2 adalah 14,04; 13,05 dan 12,75 mg/dl, rata-rata kadar urea susu adalah 12,43; 10,01 dan 10,07 mg/dl. Simpulan yang diperoleh adalah suplementasi baking soda sebanyak 0,8 dan 1% BK dalam pakan sapi perah FH laktasi tidak mempengaruhi konsumsi PK, urea darah dan urea susu. Kata kunci: sapi perah laktasi, baking soda, konsumsi protein, urea darah, urea susu