The differences in heat stress resistance due to dairy cattle breed

Gantner, Vesna; Bobić, Tina; Gregić, Maja; Gantner, Ranko; Kuterovac, Krešimir; Potočnik, Klemen

doi:10.15567/mljekarstvo.2017.0203

Cited by 17 publications

(11 citation statements)

References 10 publications

(12 reference statements)

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“…According to the literature, milk collected in winter is characterized by a lower content of somatic cells (Fonseca;Santos, 2000). The temperature-humidity index (THI) is widely used to assess the impact of thermal stress on dairy cows, as this can affect productivity and change milk composition (Bohmanova, et al, 2007;Gantner et al, 2011).…”

Section: Milk Composition and Temperature And Humidity Indexmentioning

confidence: 99%

Characterization of enzymatic coagulation of milk from Holstein cows

Beux¹,

Lima²,

Silveira³

et al. 2023

Themes Focused on Interdisciplinarity and Sustainable Development Worldwide V.1

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The milk coagulation capacity of fourteen Holstein cows was analyzed in three different periods of the year, using a low amplitude dynamic oscillatory rheological analysis. In most of the samples analyzed, the modules G' and G" increased with the time of coagulation and the gels were characterized as weak. However, the rheological results in real-time of the coagulation showed that the milk of two animals, one for presenting slow coagulation (greater than 36 minutes) and the other for not coagulating are unsuitable for cheese production by enzymatic coagulation. The values of the Temperature and Humidity Index were less than 72 and did not influence the rheological properties. Significant differences between fat and lactose contents and between pH and somatic cell score values were found between the analysis periods. Evaluating the milk coagulation capacity and the strength of the gel formed are essential to assess the appropriate destination of milk, that is, milk for cheese production or milk for the production of derivatives that do not depend on enzymatic coagulation.

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Section: Milk Composition and Temperature And Humidity Indexmentioning

confidence: 99%

Characterization of enzymatic coagulation of milk from Holstein cows

Beux¹,

Lima²,

Silveira³

et al. 2023

Themes Focused on Interdisciplinarity and Sustainable Development Worldwide V.1

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“…Berman (2005) reported that the best production of the dairy cows would be achieved when the cows were raised in the environment with 18ºC temperature along with 55% humidity. Air temperature and humidity which were outside of the comfort zone for the dairy cows would cause heat stress, an increase in physiological responses (Gantner et al, 2011) and declining productivity (Silanikove, 2000;Gantner et al, 2017).…”

Section: Milk Productionmentioning

confidence: 99%

Thermoregulation, Haematological Profile and Productivity of Holstein Friesian Under Heat Stress at Different Land Elevations

et al. 2019

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The purpose of this research was to determine the effect of heat stress on thermoregulation, haematology, and productivity of Holstein Friesian (HF) dairy cows raised in different elevations. A total of 63 HF in a normal lactation period were used in this study. The research was conducted for 3 months during dry season in three different areas, which were at Pondok Ranggon (97 m.a.s.l) which categorized as a lowland, Ciawi (576 m.a.s.l) which categorized as a lower-upland, and Lembang (1241 m.a.s.l) which categorized as an upland. Observation on microclimate aspects which includes environmental temperature (Ta), relative humidity (RH) and Temperature-Humidity Index (THI) was done by recording each variable for every 2 hours starting from 08.00 to 16.00 WIB. The thermoregulation analysis was done based on the given physiological responses which consisted of the skin temperature (Ts), rectal temperature (Tr), body temperature (Tb), heart rate (Hr), respiratory rate (Rr), Heat Tolerance Coefficient (HTC), plasma cortisol level and haematological profile observation. The Ta, Rr, and THI measurements showed that in the lowland and lower-upland, the HF experienced moderate heat stress, while the HF raised in the upland area experienced less heat stress. The results showed that the dairy cows which raised in lowland had the highest HTC, Tr, Ts and Tb (P<0.05) and lowest Hr (P<0.05). All of the physiological and haematological parameters in the three study area showed a normal value.Furthermore, the erythrocyte, Hb and PVC concentration in a lowland raised HF were higher (P<0.05), while the plasma cortisol levels were not significantly different. The milk production of the observed dairy cows in different elevations was significantly different (P<0.05), with the highest milk yields, were found in the upland raised HF (13.1±3.52 kg), followed by the lower-upland (11.3±4.73 kg) and lowland (7.0±3.36 kg). In general, all of the HF raised in different land elevations was exposed to heat stress during dry seasons, even though the cows showed the ability to physiologically adapt and cope with the conditions.

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“…Berman (2005)melaporkan bahwa sapi perah menunjukkan penampilan produksi terbaik padasuhu 18ºC dengan kelembaban 55%. Suhu dan kelembaban udara yang berada di luar zona nyaman mengakibatkan terjadinya cekaman (Silanikove, 2010;Gantner, 2017). Kondisi cekaman tertinggi yang terjadi pada dataran rendah mempengaruhi produktivitas secara nyata.…”

Section: Produksi Susuunclassified

Mikroklimat, Termoregulasi dan Produktivitas Sapi Perah Friesians Holstein pada Ketinggian Tempat Berbeda

Mariana¹,

Sumantri²,

Astuti³

et al. 2019

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ABSTRAKTujuan penelitian ini adalah untuk mengetahui pengaruh ketinggian tempat terhadap kondisi mikroklimat,termoregulasi dan produktivitas sapi Friesian-Holstein (FH). Penelitian dilakukan pada tiga lokasi dengan ketinggian berbeda, yaituPodok Ranggon (97mdpl), Ciawi (576mdpl), dan Lembang (1241mdpl). Sebanyak 63 sapi FH dalam kondisi laktasi normal digunakan dalam penelitian ini. Aspek lingkungan meliputi suhu udara, kelembaban relatif dan Temperature-Humidity Index di dicatat setiap 2 jam dari pukul 08.00 sampai 16.00 WIB. Parameter termoregulasi yang diamati terdiri atas suhu kulit (Ts),suhu rektal (Tr), suhu tubuh (Tb), denyut jantung (Hr),laju pernapasan (Rr), dan Heat Tolerance Coeficient (HTC).Berdasarkan nilai Ta, Rr dan THI, dataran rendah memberikan dampak cekaman panas sedang, dataran sedangdan tinggi memberikan dampak cekaman panas ringan pada sapi perah. Hasil menunjukkan bahwa sapi dataran rendah memiliki Nilai HTC, Tr, Ts dan Tb tertinggi (P<0,05) dan Hr yang terendah (P<0,05). Produksi susu di ketiga lokasi penelitian berbeda nyata (P<0,05), dengan produksi susu tertinggi di dataran tinggi (13,1±3,52 kg),dataran sedang (11,3±4,73 kg) dan dataran rendah (7,0±3,36 kg). Secara umum sapi FH di dataran rendah, sedang dan tinggi tercekam panas akibat kondisi lingkungan yang berada pada kondisi di luar zona nyamanselama musim kemarau, akan tetapi mampu beradaptasi terhadap kondisi tersebut. Kata kunci: ketinggian tempat, produktivitas, sapi perah, cekaman panas, termoregulasiABSTRACTThe purpose of this research was to determine altitude effect on microclimate, thermoregulation and productivity of Friesian Holstein. Research was conducted in different altitudes, i.e.: Pondok Ranggon (97m asl), Ciawi (576m asl), and Lembang (1241 m asl). A total of 63 FH cows in normal lactation were used in this study. Microclimate aspects observation includes environmental temperature (Ta), relative humidity (RH) and Temperature-Humidity Index (THI) were recorded every 2 hours from 08.00 to 16.00. The physiological responses measurements consisted of skin temperature (Ts), rectal temperature (Tr), body temperature (Tb), heart rate (Hr), respiratory rate (Rr) and Heat Tolerance Coeficient (HTC). Lowland environmental provide moderate heat stress, while the medium and highland impacts with mild stress. The results showed that lowland cows have highest HTC, Tr, Ts and Tb (P<0.05) and lowest Hr (P<0.05). Milk production in the different altitude was significantly different (P<0.05), with the highest milk yields in the highlands (13.1±3.52 kg), medium (11.3±4.73 kg) and lowland (7.0±3.36 kg). In general, HF dairy cows in low-, medium- and highland are exposed to climatic stress during dry season conditions, although they have the ability to adapt physiologically and cope with environmental stress. Keyworlds: altitude, dairy cattle, heat stress, productivity, physiological responses

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The differences in heat stress resistance due to dairy cattle breed

Cited by 17 publications

References 10 publications

Characterization of enzymatic coagulation of milk from Holstein cows

Characterization of enzymatic coagulation of milk from Holstein cows

Thermoregulation, Haematological Profile and Productivity of Holstein Friesian Under Heat Stress at Different Land Elevations

Mikroklimat, Termoregulasi dan Produktivitas Sapi Perah Friesians Holstein pada Ketinggian Tempat Berbeda

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