Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
In order to most readily useful comprehend the aftereffect of the fresh crossbreeding towards sexual precocity of crossbreed pet, the fresh new AFC is reviewed based on: crossbreed types of, competition from sire mothers (bull and inseminated regional cows), hybridization top and you may stock farms
The fresh new indicate decades initially calving for everyone types developed was ± months, representing up to 3 years (2 years 11 days 19 weeks ± 11 weeks 24 hours). The absolute most precocious heifers calved inside 2 yrs ( months). To own 50% out-of heifers, first calving was at days. The initial services happened on average in the ± weeks ( so you can weeks).
The new mean AFC of your own crossbreeds are less than people stated one of several Zebu beneath the tropics in the over 40 weeks reported in a lot of knowledge ( Rahman mais aussi al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you will Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Particular writers features claimed efficiency very next to our observation into some other crossbreeds during the Africa, in spite of cow breeds utilized in the fresh new try: 34 days one of many Montbeliard crossbreeds inside the Algeria ( Madani and you can Mouffok, 2008 ) and you may Morocco ( Srairi and Mousili, 2014 ), ± 0.43 days regarding Girolando crossbreed into the Benin ( Doko ainsi que al., 2012 ). It absolutely was a comparable towards the Holstein-Friesian crossbreed cattle within the Ethiopia at thirty-six.cuatro ± step one.7 months, the fresh Borgou and you will Lagunaire types during the 36.1 ± six.30 weeks in the Benin ( Adamou-Ndiaye ainsi que al., 2003 ) plus the latest Azawak Zebu at the 36.5 ± 4.ten and you will ± 13 months during the Niger ( Achard and you will Chanono, 2006 , 1997 ).
The observance are more meilleurs sites de rencontre pour célibataires politiques than the individuals claimed by Genzebu ainsi que al. (2016) certainly hybrid cows inside the Kenya (twenty-six.nine ± 5.4 and you will twenty seven.0 ± 3.seven months). It absolutely was somewhat a lot better than the latest observations of the Ngodigha mais aussi al. (2009) out-of 30.seven ± 2.5 days certainly crossbreeds (Holstein x Bunadji) when you look at the Nigeria, Ben Salem ainsi que al. (2009) of 31.seven ± cuatro.one year for the Holstein inside the Tunisia and you can Srairi and you may Mousili (2014) out-of 29 weeks from inside the Montbeliard when you look at the Morocco. Some version situations associated with AFC was indeed reviewed in order to reach the statements.
One of several various other crossbreeding designs identified ( Desk 1 ), the fresh new Fulani Zebu (FZ) inseminated which have sperm out-of Montbeliard (MB x FZ) and Alps Brownish (Abdominal x FZ) keeps produced by far the most precocious corssbreeds (basic calving from the a couple of years) (5%). If you are, the latest inseminations out-of Fulani Zebu cattle towards semen away from Holstein (HT x FZ) and from Tarentaise (T x FZ) then your insemination out of Gudali Zebu cows that have semen of Montbeliard (MB x GZ) keeps produced the new precocious crossbreed cattle.
The minimum is months and the limitation was months
Table step one: Years at first calving (months) based on crossbreeding type in milk cows facilities in the region regarding Bobo-Dioulasso within the Burkina Faso
The analysis worried about the new breeding monitoring of twenty (20) hybrid cattle resulting from the latest interbreeding from the artificial insemination ranging from regional breed cattle (Gudali Zebu and you will Fulani Zebu) and you can exotic reproduce bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These types of crossbreeds was born between 1999 and you can 2010 and you can provided the basic calf anywhere between 2002 and you may 2012 into the three enhanced stock farms within the metropolitan and you will residential district regions of Bobo-Dioulasso. All these farms has regarding the fifty hybrid cows for the manufacturing. The initial farm is found in a city, next ten Km out in the southern area exit therefore the third 60 Kilometer out at the east get-off of Bobo-Dioulasso. Initial surveys between in these areas helped to pick such about three facilities that have a livestock sign in (temperature and artificial insemination keeping track of sheets). Occurrences connected with personal tabs on animal reproduction particularly calving schedules, times of very first warms and you can inseminations was basically filed every day of the the fresh cattlemen and also the inseminators. The latest exploitation of them data made it you are able to to determine twenty (20) very first calving’s comparable to the original services. These types of farms try described as the presence of lost, an excellent herd wellness overseeing, a guided reproduction setting (generally AI, having not enough a selected bull), the brand new concentrate provides (cotton fiber pie or cottonseed and you may industrial malt) in the ration giving and extreme shipments out-of silage and you will agricultural because of the products. The actual only real intent behind this operation method of is the development and you may selling out-of by hand canned milk, two times a day (day and you may evening). The latest focuses try served towards pet to their come back of grazing and in brand new early morning at milking big date.